Tender frame structure



Dec. 25, 1934. A. R.,AYERS Er'AL 1,985,711

TENDER FRAME STRUCTURE Filed July 6, 1931 ll Sheets-Sheet l A.- R. AYERS ET AL TENDER FRAME STRUCTURE Dec. 25, 1934.

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Dec. 25, 1934. A. R. AYERS ET AL TENDER FRAME STRUCTURE ll Sheets-Sheet 5 1 l I 1 I 1 l l Filed July 6,

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TENDER FRA ME STRUCTURE 11 SheetS -Sheet e Filed July 6, 1931 Dec. 25, 1934. A. R. AYERS El AL TENDER FRAME STRUCTURE Filed July 6, 1931 11 Sheets-Sheet 9 Dec. 25, 1934. A; R. AYERS ET AL TENDER FRAME STRUCTURE iled July 6, 1931 11 sneets sneet 10 v fed? A. R. AYERS Er AL TENDER FRAME STRUCTURE Dec. 25, 1934.

Filed July 6 1931 11 Sheets-Sheet 11 Ifflf'llllilldli'llll I Patented Dec. 25, 1 934 UNITED STATES PATENT OFFEQ.

TENDER FRAME STRUCTURE Augustine R. Ayers and George S. Vail,

Cleveland, Ohio Application July 6, .1931, Serial No. 548,802

- 23 Claims. (Cl. 10-231) ported.

In carrying out our invention, we provide an improved construction of tender frame and tank body of the skeletonizedtype above described;

wherein the main frame consists only of a single longitudinal beam without bolsters or ,end sills,

the front end portion being of approximately the same length, and width as the stokerwell'of the tank, and the portion of'the frame back of the than the stokerwell and only a small part of the width of the tank. The bottom plates of the tank are connected directly. to the'side's of the frame members considerably below the top thereof, so as to reduce the center-of gravity of the entire tank. The side plates orggirders braced by transverse and diagonal strut's front the center frame, provide the desired support for the overhanging portions of the tank. 1

Other objects of the invention will appear from time to time as the following description proceeds.

Ins-the drawings, Figure 1 is a side view of a locomotive tender constructed in accordance with my invention.

, Flgure'z isa plan view .of the rear end of the main frame casting. a l

Figure 3 is a section takenon line 3-3 of Figure 2. 1

Figures 4, and 6 are transverse sections taken onlines 4-4, 5-5 and 6-6, respectively, of Figure 2.

Figure 7 is a plan-view of the front portion of the main frame casting. This figure constitutes a continuation of the casting shown in Figure 2. Figure 8 is a longitudinal section taken on line of Figure T.

. Figures 9, 10, 11,,12, Band '14 are transverse therewith, upon which the tank body is supstokerwell to the extreme end being narrower Figure 17 is a view similar to Figure .16, but showing the front end of the tank.

Figures 18, 19, 20, 21, 22, 23 and24 are transverse sections taken on lines 18-18, 19-19,

20-20, 21-21, 22-22, 23-23 and 24-24, respectively, of Figure 16, but with the main frame casting in place.

Figures 25, 26, 27, 28 and. 29 are transverse sections taken on lines 25-25, 26-26, 27-27, 28-28 and 29-29, respectively, of Figure 17, but with theomain frame casting in place.

Referring now to details shown in the irawings, the locomotive tender shown in Figure 1 comprises a. tank 10 supported on main frame 11, which in turn is supported on trucks1'2, 12 which may be ofany suitable construction. The tank 10 shown herein is of the usual two-compartment type, the rear compartment 10 being for water.

and the front compartment 10 for coal. A third compartment or stokerwell 10 is provided beneath the coal compartment adapted for use either for containing automatic stoking apparatus, or as additional water space, as will hereinafter more fully appear.

- The mainframe 11 consists of a centrally disposed longitudinal beam extending the length of the tender and having an enlarged or widened portion 16 at its front end of substantially the same width and length as the stokerwell 10.

The central beam 11 is preferably of hollow box girderconstruction and is provided with the usual means for draft connections at opposite ends, which need not be described in detail excepting to point out that the rear and front end portions 15 and 16 of the center beam 15 are offset downwardly below the ends of the main frame 11. The core holes 14, 14- at the bottom of the central beam casting are closed by plates 14, 14 to form a water passage, as will hereinafter more fully appear.

Bearing means are provided for swiveling the trucks 12, 12,-the bearing for the rear truck being indicated at 1'7,- and reinforced by transverse and longitudinal upright ribs 17 17 as shown in Figures 2, 3 and 6, whilecthe forward truck bearing 18 is shown in Figures '7, 8 and 12, said bearing being disposed in the widened portion 16 beneath the stokerwell and being reinforced by transverse and longitudinal upright ribs 18, 18 Especial-provisions are also made for reinforcing the interior of the tank at these bearing points, as will hereinafter more fully appear.

Along the lateral side walls of the main beam 15 and continued along the side walls of the enlarged portion 16 are formed continuous horizontal flanges or projections 25, 25 which are considerably below the upper surface of the beam, herein being substantially midway between the upper and lower surfaces of said beam. These flanges are adapted to have their upper surfaces machined in a planing operation so as to permit the bottom plates of the tank to be secured thereto. 1

The tank body is built up on the main beam by riveting or welding horizontally disposed plates 35, 35 along the flanges 25, 25 at each side of said main beam. With this construction the rear beamportion 15 forms a part of the tank bottom, but the upper portion of said beam portion projects substantially above the bottom plates 35, 35 of the tank, as clearly shown in the several transverse sections. In order to support the overhanging portions of the tank and.

. grally with'th'e bottom plates 35, 35. Various transverse bracing structures are employed, depending upon the strength requirements at several points along the water tank. For instance, in Figure 19 it will be noted-that immediately above the rear truck bearing 1'7, we provide a transversely extending, rigid plate or bulkhead 40, 40, extending the full width and height of the tank, and welded or riveted to angle irons 41 secured to the top of the beam 15, angle irons 42 secured to the bottom plates 35, angle irons 43 secured to the side walls 38, and angle irons 44 secured to the top wall 45 of the tank. The plate 40 is further reinforced by a series of diagonally extending angle irons 46, 4'7,- 48 and'49 secured to said plate and arranged on lines ,extending in a generally diagonal direction toward the main frame as shown. The lower outside comer of the plate 40 is preferably cut away so margins of the central beam 15 and having a longitudinally extending baflle plate 52 connected thereto which has its lower margin slightly above the level of the beam 15 and its upper margin substantially below the top plate 45, as clearly shown in Figure 19. These baflie plates 52 are arranged to limit excessive transverse wave motion of the water within the tank. Similar baflie plates 52, 52 are arranged'sbetween adjacent transverse brace structures in the water tank to form continuous upright'baflies throughout the length of said tank, and disposed parallel to both sides of the central beam 15, as shown in' the several sections, Figures 18 to 26, both inclusive.

The transverse brace structure immediately to the rear of the plate 40 is shown in Figure 18,

and comprises an upright plate 54 connected top plate 45 and the main frame beam 15, and

horizontally between the two longitudinal baflle plates 52, 52. The plates 55 are connected to each of the plates 54 by a diagonal brace 56 passing through the baffle plates 52, and an intersecting brace '7 also connects the plate 55.

with the diagonal brace 56 as shown.

The transverse brace structures to the front of the rigid brace structure shown in Figure 19 are shown in Figures 20 to 25. As will be seen from these figures, the space between each of the longitudinal bailles 52. and the side wall 38 is provided with an upright baflie extending about onehalf of the width of said space, said upright baflies being arranged in staggered relation so that they are alternately adjacent the-baffle 52 and the side plate 38. Thus, in the section shown and 26, the upright bafile plates 64, 65 and 66 are arranged alternately adjacent the bafile 52 and the side plate 38. This staggered relation of the upright baflle plates on each side of the tank minimizes longitudinal wave action of the water therein.

We also provide transversely extending baflle plates in the bottom of the tank, as for instance, in the sections shown in Figures 21 and 26, baflle plates 68 and 69 are connected along the bottom plate 35 and extend upwardly approximately onethird of the height of the tank, where'they are connected to the upright bafile's 61 and 66, re-

spectively.

It will be observed further that in connection with each of the upright bafiles 60, 61; 63, 64 and 65, diagonal braces 60, 61 63 64 and 65*, respectively, are provided extending from the outer corner formed between the side plate 38 and the top plate45 downwardly to a centrally disposed, upright batlie plate mounted transversely on the upper face of the main beam 15. These centrally disposed bafile plates may be of different heights. For instance, in Figures 20 and 25 central baflle plates '70 and '71 extend only about one-third of the height of the tank, while in Figures 21, 23 and 24 the transverse baflle plates '12, '73 and '74, respectively, extend the full height of the tank between the longitudinally extending baflle plates 52, 52.

truck bearings 17 and 18. For this purpose we provide a series of longitudinally extending T- bars 80 and 81 connectedto the inner surfaces of the side plates 38, and connect the opposite pairs of T-bars by a series of cross braces 80 and 81, respectively. As will be seen from Fig-' ures 16 and 1'7, the upper cross braces80 extend above the longitudinal baffle plates 52, 52, but

in Figure 20, the upright bafiie' 60 is arranged v the lowercross braces 81' pass through apertures to which the bottom plates 35, are connect- 82 formed in the longitudinal baflle plates 52;, '52.

Referring now to the structure at the forward drained into the center beam and carried forend of the tender comprising thecoal space 10 wardly therethrouglr to suitable drainage outand the stokerwell 10, it will be seen in Figure 17 lets 103, 103 leading from the bottom of the main that the rear end of the stokerwell is defined by beam adjacent the coupling connection at the an upright transverse plate 85 The sides of said front end of the main beam.-

stokerwell are defined by upright plates 86, 86, In th' form shown h e it w be observed the latter plates being secured by angle irons 86 that apertures 104, 104 are provided along the to the elevated machined upper surfaces 16" of sides of both the rear and front sections 15 and the enlarged portion 16 of the main frame b am 16 to form communication between the water tank 11, at or adjacent the side margins th f, as and the interior of the hollow beam 11. A series shownin Figures 28 and 29. of suitable passages 105, 105 are also provided The upright plates 86, 86 are each preferably through the lower Portion of the t a vers W integral with diagonal plates 87, 87 which are conbing within beam 11 so a t0 Permit the Water to nected to the side .plate sa, 3s and form the two pass f rward y, th t u h, and dis ha e d side slope plates for the coal space. through the drainage openings 103, 103 at the The bottom of the coal space is separated from front end of the main beam. the stokerwell by the horizontalplate 88 suitably secured .as by angle irons 89 at the point or drainage outlets 103 and leads forwardly and jointure of the upright plates 86 and the side slope thence laterally to a tank w'ell 103 suitably ed, so that all of the water from the tank may be A pipe 103 is connected to each of the water i plates 87. The stokerwell thus defined is adapted mounted as by riveting to the bottom plate 35 and for installation of an automatic stoking apparadepending below the same at. the Side Of the coutus, details of whiclrneed not be described, as it Pie member ssseen in Figure An injector forms no part ofthe present invention. It will 0'1" water feed pu (not shown) is mounted a be understood, however, that the stokerwell space usual with its inlet disposed in said tank well. is equally well adapted to be. used as part of the water tank. V stokerwell space l0is used for water, the several It will be observed that the box girder structure core holes 107, 107 on the t p of e nlarged D formed by the stokerwell space and the side slope tion 16 the a beam y be left 011811 as plates 87 proyides a particularly rigid diagonal shown in Figur 7, t when a stoking apparatus bracing between the beam portion 16 and the side us in the stokerwell,,these c re ho es W be plates 38. The spaces on opposite sides of the closed by suitable means, as, for instance by stokerwell and below the side slope plate 87 form p ates 08, 8 We d therein, as indicated in contlnuations of the water tank. Additional Figure 8. transverse bracing is also provided at points along 1 Among the features of a tender frame and tank these last named spaces, asillustrated in Figstructure constructedasabove described may now vent lateral bulging of said plates.

be made up of two parts, the lower part 99' terures 28 and 29. be emphasized the following: 7

In Figure 28, a rigid plate 90 occupies substane ce te b am 1 i ma of minimum W d tially the entire cross section of each of the spaces its Widest P being O y as w as the stokerwell outside of the side plate.86 and below the side spa t us eli na sid sills, nd sills d.

ill; will be understood,of course, that when the slope plate 87, the plate 90 being preferably perintermediate bolsters such as utilized in previforated at 91, and also being cut away at the lowous constructions and conserving the weight and er outside corner of the tank to form a water passt thereof. It will be observed in this connecsage 92. It will be especially noted that ,these rigid tion a the front a portion 16 is n y anplates 90, 90 are opposite the center bearing supp x y One-half the entire Width of the a port 18 for the forward truck 12 so as to provide, While the real bee-m Portion 15 is approximately with the stokerwell structure, an especially rigid r h h Wi bf the l support for the side plates 38 t thi i t, Q It will be noted further that the side flanges In the section shown in Figure 23, a diaggnal or ledges to which the bottom plates are secured brace 93 is also provided'between the upper surmay h planed'in direct longit d lines, h c

- face of side slope plate 87 and the extended por- 1 planing p at y be a r d ut i a sn'np 1 tion 38 of the side plate within the coal space.

manner on much narrower planing machines In the section shown in Figure 29, a cross plate n would be required where t d sills, s desi 94 is connected between the center portion of the intermediate holstsl's are included in the main side slope plate 87 and the side plate 38 to preframe structure T s pp to machin- A diagonal ing operations on the elevated co-planar surfaces brace 95 is also connected between the plate 94 15",and 16 on the t p of the center beam 011 and a comer plate 96 connected between the side which the Central til-11k superstructure e ts plate 86 and the bottom-plate 35. are d- The rear slope plate 99 -of the 'coal space ex- It Will he understood h Owing to the u h tends from andis supported on the platform 88 greater depth of h side pistes d rs, the and the top of rear plate 85 of the stokerwell, and deflection thereof (1118 9 e suspended Weight thence passes upwardly between the id slopes of the tank and its contents is less than the de- 87 of the coal space and the extended portions fl o of the centenbeam. so that the de te 38, 38 of the side plates. s slope plate may form the main longitudinal girders for the tender, extendingefrom front to rear of the tank. When minating at the top plate 45 of thewater tank" p y ed a d ted,; he s p t s, and the upper part 99 being conti d at th bottom plates and center beam all co-operate to same angle above said top plate45, produce the required strengthand rigidity of the In connection with the water tank structure structure. The Provision of substantially solid and the center frame 11, we also provide'means bulkheads a'toradjacent the swivel points for the whereby said center beam forms a part of the trucks, together with the intermediate bracing water tank and has communication at points within the tank structure, provides a substantial along its sidejust above the supporting flanges 25, support for the side plates, through the main beam to the trucks. It will be understood, of course, that the specific forms of diagonal and longitudinal bracestructures within the tank may be varied somewhat-from those disclosed herein, provided structures of equivalent strengths are substituted therefor.

Another unique feature of our improved design is that provided by the arrangement in the vicinity of the coal space in which the side slope sheets are connected at their bottoms to the main frame casting at the stokerwell space, are cross connected at the top of the stokerwell space and thence extend diagonally 'to the side plates or girders at the top.

' A still further feature in connection with this structure is the cross bracing to prevent lateral bulging of the slope plates or side plates at the sides of the coal space.

The novel method of securing the superstructureto the co-planar upper surfaces 15 and 16"- of the center beam by means of angle irons, welded or otherwise secured thereto, permits of considerable variation in the positioning of the superstructure along said main beam. Similarly the bottom plates may be extended more or less longitudinally of the center beam, so that a given length of beam is suitable for use with tanks of various lengths, widths and weight distribution. This feature has been found to be of particular advantage in adapting old tank structures previously made for use on-customary rectangular frames, but altered by utilizing practically everything except the bottoms, and building the old upper portion of the tank on new bottoms made up of the novel cast steel center beam and bottom plates constructed in accordance with our invention. Old tanks of varying widths and lengths may thus be readily adapted for mounting on such cast steel center beam of standard length, by merely redesigning the interior superstructure, regardless of considerable diflerences. in the lengthsof the two units, because the tank sheets rest entirely on the machined surfaces provided on the top and sides of the main frame, and there are no upright or laterally extending members on the frame to restrict the. location of the old tank to one definite position. For instance, if the tank should come rather-long, this should be taken care of by locating the front corner in the correct position and letting the backbe slightly farther to the rear than its'normal position on the main frame. f

The side and back slope sheets of the coal space,

where these sheets are fastened to the frame, are

also not restricted to any specific location, since said slope sheets maybe fastened either directly or indirectly to the frame by means of angle irons which may come a little out of line either sidewlse or lengthwise of theenlarged portion 16 of the main beam, without causing any par-'- ticular difficulty in construction.

It will therefore be understood from the foregoing-that the co-planar machined surfaces 15 and 16* provided on the top of the main frame 11 are not limited to any specific size or arrangement, but may be extended in size so as to acv rcommodate any variations, either laterally or longitudinally, in the positioning of the central tank superstructure thereon.

Our novel arrangement for water drainage ;from the bottom of the main beam is superior to previous arrangements in which'the tank bottom substantially flat, with the lowest points of water all practically on the same level. In such prior constructions there might be a relatively large quantity of water left in the tank, but when distributed over the entire tank bottom the water would not drain to the tank wells fast enough to maintain a sufficient supply to the injectors or feed pumps, with the result that said pumps would break suction long before the tank was entirely p y. I

In our improved construction the main beam 11 forms a part of the water tank, with its bottom considerably below the level of the bottom plates 35, 35, so that said main beam 11 forms in effect a center trough of limited width. Consequently the last few inches of water remaining in the tank will bedrained into the main beam 11 so as to be concentrated therein, and will be drained freely therefrom into the tank wells so as to maintaln a constant supply of water in the injectors or feed pumps until practically all of the water has been utilized.

It will be observed that so far as the specific structure of the water drainage system is concerned, the trough formed by the main beam 11 can also be formed by other structural elements, as for instance by providing an open depression or trough in the bottom of the tank body which reduced to a minimum commensurate with the size of the supporting trucks and the wheels at opposite sides of the trough.

Although we have illustrated and described one particular embodiment of our invention, it will be understood that we do not wish to be limited to the exact construction shown and described, but that various changes and modifications may be made without departing from the spirit and scope of our invention.

We claim:

1. In a locomotive tender frame, a cast steel main frame consisting of a single piece longi 'tudinal beam widened at its front end to form the bottom of a stoker compartment, but otherwise without laterally projecting bolsters, supports or end sills, said main frame forming the sole support for a tank superstructure.

2. In a locomotive tender frame, a cast steel main frame consisting of a single piece longitudi nal beam widened at its front end to form the bottom of a stoker compartment, but otherwise without laterally projecting bolsters, supports or end sills, said main frame forming the sole support for a tank superstructure, a pair of flanges formed along the opposite sides of said longitudinal beam below the top thereof, and bottom plates for the tank supported on said flanges.

3. In a locomotive tender-frame, a cast steel main frame consisting of a single piece longitudinal beam widened at its front end to form the bottom of a stoker compartment, but otherwise without laterally projecting bolsters, supports or end sills, said main frame forming the sole support for a tank superstructure, a pair of flanges formed at a uniform height along the opposite sides of said longitudinal beam below the top support for a tank superstructure, a pair of widened to approximately the same width and length as the stoker compartment, said longitudinal beam forming the sole support for the tank superstructure.

I 5. In a locomotive tender including a water tank, a coal compartment and a stoker compartment, a main frame consisting of a single piece longitudinal beam having its front end portion widened to approximately the same width and length as the stoker compartment, but otherwise without laterally projecting bolsters, supports or end sills. said longitudinal beam forming the sole support for the tank superstructure.

6. In a locomotive tender including a water tank and a coal compartment at the forward end thereof, having its floor substantially less than the width of the tank and its side and rear walls flaring outwardly therefrom, a main frame cohsisting of a single piece longitudinal beam having its front end portion widened to approximatelyplates rigidly supporting the margins of said coal compartment floor with the side margins of said widened beam portion.

8. In a locomotive tender including a water tank and a coal compartment at the forward end thereof, having its floor substantially less than the width of the tank and its side and rear walls flaring outwardly therefrom, a main frame consisting of a single piece longitudinal beam having its front end portion widened to approximately the same width and length as said floor of the coal compartment. and upright longitudinal plates continuous with said flared side plates of the ,coal

- compartment and rigidly supporting the margins of said coal compartment floor from the side margins of said widened beam portion.

9-. In a locomotive tender including a water tank, a coal compartment and a stoker compartment beneath said coal compartment, a main frame consisting of a single piece longitudinal beam having its front end portion widened to approximately the same width and length as the stoker compartment, and a pair of longitudinal upright plates connected between the lateral margins of said widened beam portion and the floor of said coal compartment to define the side walls of said stoker compartment. 7

10. In a locomotive tender including a water tank, a coal compartment and a'stoker compartment beneath said coal compartment, a main frame consisting of a single piece longitudinal beam having its front end portion widened to approximately the same width and length as the stoker compartment, and a pair of longitudinal .upright plates connected between the lateral margins of said widened beam portion and the floor of said coal compartment to define the side walls of said stoker compartment,-and said plates continuing diagonally outwardly to the sidewalls of the watertank to define the side slope plates of said coal compartment. 11. In a locomotive tender, a cast steel mai frame consisting of a single piece longitudinal beam, of box girder construction forming the sole flanges formed along the opposite sides of said longitudinal beam intermediate the top and bottom thereof, bottom plates for the tank super- I structure supported on said flanges, said longisupport for a tank superstructure, a pair of flanges formed along the opposite sides of said longitudinal beam intermediate the top and bottom thereof,- bottom plates for the tank superstructure supported on said flanges, said longitudinal beams having apertures in the sides thereof above said flanges to afford communication from the tank to the interior of said beam so that the latter forms a part of the water tank extending below said tank bottom plates, and water discharge connections at the forward end of said beam also below said tank bottom plates.

13. In a locomotive tender, a cast steel main frameconsisting of a single piece longitudinal beam of box girder construction, a water tank above the bottom of said beam, means affording communication from the tank to the interior of tank at the rear end and a coal compartment at the front end, a single piece longitudinal beam forming the sole support for said tank and coal compartment, said beam being of box girder structure extending below the bottom of said water tank, and having passages communicating between said tank and extending forwardly beneath said coal compartment to discharge connections at the front end of said beam.

15. In a locomotive tenderJa main frame consisting of a single piece longitudinal beam without bolsters or end sills and forming the sole support for a tank superstructure, said beam being widened adjacent its front end to approximately one-half the total width of the tank and having a rear end portion substantially one-fourth of the total width of the tank.

16.- In a locomotive tender, a main frame consisting of a single piece longitudinal beam without bolsters or end sills and forming the sole support for a tank superstructure, said beam being widened adjacent its front end to approx- 7 tures extending between the side plates' and supported on said main frame.

17. Ina locomotive tender, a main frame consisting of a single piece longitudinal beam without bolsters or end ,sills and-forming the sole 'support for a tank superstructure, said beam having a plurality of pivotal bearing supports for the tender trucks, and a tank superstructure including bottom plates connected to the sides of the beam below the top thereof, side plates connected along the outer margins of said bottom plates, and a plurality of transverse bracing structures extending between opposite side plates and supported on said main frame, the transverse bracing structures adjacent the pivotal truck supports including rigid upright plates connected between the .side walls, the bottom plates and main frame beam within the tank structure.

18. In a-locomotive tender, a main frame consisting of a single piece longitudinal beam without bolsters or end sills and forming thesole support for a tank superstructure, said beam having a plurality of pivotal bearing supportsfor the tender trucks, and a tanksuperstructure including bottom plates connected to the sides of the beam below the top thereof, side plates con- -the' center frame beam, respectively.

19. In a locomotive tender, a main frame consisting of a single piece longitudinal beam without bolsters or end sills and forming the'sole support for a tank superstructure,- said beamhaving a-plurality of pivotal bearing supports for the tender trucks, and a tank superstructure in cluding bottom plates connected to the sides of the beam below the top thereof, side plates connected alongthe outer margins of said bottom plates, a plurality of transverse bracing structures extending between opposite side plates and supported on said main frame, the-transverse bracing structures adjacent the pivotal truck supports including rigidupright plates'connected between the side walls, the bottom plates and main frame beam within the tank structure, and a pair of upright baflles disposed longitudinally :Ii thin said tank on opposite sides of said main eam.

20. In a locomotive tender, a main frame consisting of a single piece longitudinal beam without bolsters or end sills and forming the sole support for a tank superstructure, said beam having a plurality of pivotal bearing supports for the tender trucks, and a tank superstructure includingbottom plates connected to 'the sides of the beam belowthe top thereof, side plates connected along the outer margins of said bottom plates, a,

plurality of transverse bracing structures extending between opposite side plates and supported on said main frame, the transverse bracing structures adjacent the pivotal truck supports including rigid upright plates connected between the side walls, the bottom plates and main frame beam within the tank structure, a

plate.

21. In a locomotive tender, a cast steel main frame consisting of a single piece longitudinal.

beam of box girder construction forming the sole support for a tank superstructure, bbttom plates for the tank superstructure connected to said beam above the bottom thereof, means affording communication from the tank to the interior of said main frame casting so that said casting forms a part of the water tank, a tank well supported on and extending below said tank bottom plates adjacent the front end of said tank structureand communicating therewith, and an auxiliary conduit extending between said tank well and said longitudinal beam below the bottom of saidtank bottom plates.

22. In a locomotive tender, a cast steel main frame" consisting of a single piece longitudinal beairi of box'g'irder construction, a tank superstructure mounted thereon and solely supported thereby, said tank superstructure including substantially horizontal bottom plates secured to the sides of said beain intermediate the top and bottom thereof, and means affording communication between said tank superstructure and the interior of said main frame casting so that the latter forms a part of the water tank extending below the bottom of said ,-tank superstructure.

23. In a locomotive tender, a cast steel main frame consisting of a single piece longitudinal beam of box girder construction, a tank superstructure mounted thereon and solely supported thereby, said tank superstructure including substantially horizontal bottom plates secured to the sides of said beam intermediate the top and bottom thereof, said beam having a plurality of the bottom of said tank superstructure.

AUGUSTINE R. AYERS. GEORGE s. VAIL. 

